8th grade math i mark as brainliest
Answer:
0.083 or 8.3%
Step-by-step explanation:
Since there are initially four cards, each card has a 25% (or 1/4) chance of being chosen. So the 8 card would have a 1/4 chance of being chosen.
Since the first card was chosen and not put back into the deck, the percent chance of each chosen card changes from 25% to about 33.3% (or 1/3) chance of being chosen. So the 8 card would now have a 1/3 chance of being chosen.
Since the question is asking what the percentage of choosing an 8 twice without replacing it is, you would multiply each of the percent chances that 8 card has to be chosen. In this case, multiply 1/4 and 1/3
This will result in about 0.083. To change to a percentage, multiply by 100 and the answer will end up at 8.3%.
Answer: 0%
Step-by-step explanation:
If you pick a 8 the first time, and you don't put it back, then there is no chance to get a 8 the second time. However, fi you pick a number other than 8 the first time, and pick 8 the second time, you didn't get 8 both times. Hope this helps!
Link is coloring a triforce, which consists of four equilateral triangles and is depicted below. He has three colors to use: gold, black, and green. So that it remains recognizable, he doesn't want to color any two triangles the same color if they share a side. How many different ways can he color the triforce? (Two colorings that differ by rotation are considered distinct.)
Answer:
.
Step-by-step explanation:
.
last summer at Gilliam Grant day camp the ratio of the number of counselors to the number of campers was 3 : 11. if there were a total of 168 people at the camp including counselors and campers how many counselors were there? how many campers were there?explain
Answer: the number of counselors is 312 = 36, and the number of campers is 1112 = 132
Step-by-step explanation:
To determine the number of counselors and campers at Gilliam Grant day camp, we can use the information provided in the ratio: 3 : 11.
This ratio tells us that for every 3 counselors, there are 11 campers. To find the total number of counselors and campers, we can set up the following equation using the information provided:
3x + 11x = 168 (x represents the number of counselors or campers)
14x = 168
x = 12
So the number of counselors is 312 = 36, and the number of campers is 1112 = 132
We can also check that the total number of counselors and campers is equal to 168 by adding 36 + 132 = 168
Can anyone help me with this one, Next one.......
Answer:
B) m + 7
Step-by-step explanation:
x + y + z = (m+9)/2 + (2m+15)/2 + (3m+18)/2 = (6m + 42)/2 = 3m + 21
Average of x, y, and z = (x + y + z)/3 = (3m + 21)/3 = m + 7
Answer:
m + 7
Step-by-step explanation:
\(x = \frac{m + 9}{2}\\ \\y = \frac{2m + 15}{2}\\\\z = \frac{3m + 18}{2}\\\\To\;\;find\;\;\\\frac{x+y+z}{3} \\\\= \frac{1}{3} *[\frac{m + 9}{2}+\frac{2m + 15}{2}+\frac{3m + 18}{2}]\\\\= \frac{6m + 42}{6}\\ \\= m + 7\)
Complete the equation of the line whose slope is -2 and y-intercept is (0,-8)?
y =
I will give brainliest
Mr. bell earns $2,840 per month. If his state income tax rate is 2.5% how much does he owe per year for state income tax?
An art club sells 42 large candles and 56 small candles.
Write and simplify an expression that represents the profit.
expression for the profit:
simplified expression for the profit:
A large candle costs $5, and a small candle costs $3. What is the club’s profit?
club's profit:
Use the distributive property to find an expression that is equivalent to
2x(x + 7)-(3x +1)
Answer:
A
Step-by-step explanation:
One more please help
Answer:
..,.
Step-by-step explanation:
-18 -13 -2 2 9 11
how do i do this???????
Answer:
x < 3
Step-by-step explanation:
Add 3x to both sides = 2x + 3x < -3x + 15 + 3x
then simplify = 5x < 15
divide both sides by 5 = \(\frac{5x}{5} <\frac{15}{5}\)
simplify again = x < 3
WILL GIVE BRAINLIEST
Answer:
2 and 4
Step-by-step explanation:
i want brainiest
Answer:
2 & 4
Step-by-step explanation:
Write an equation of the line that passes through (−4, −9) and is parallel to the line y=4x .
Answer:
y = 4x + 7
Step-by-step explanation:
parallel = same slope
y = 4x + b
plug in (-4, -9)
-9 = 4(-4) + b
-9 = -16 + b
b = 7
y = 4x + 7
Answer:
7=4x+7
Step-by-step explanation:
To do this you would just plug in (-4,-9) into the equation y=mx+b so we would get -9=4(-4)+b when you simplify you will get -9=-16+b so we would add 16 to both sides and we would get 7=b so we would know that the y intercept is 7 and we know that if a line is parallel to another line is just has a different b so for our equation we would get 7=4x+7
10. If 40% of a number is 80, what is 25% of that
number?
Answer:
50Step-by-step explanation:
If 40% of a number is 80, what is 25% of that
number?
80 : 40 * 25 =
50
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If the relationships below are given in the form (input, output), which pairing always describes a function? (a person’s age in years, that same person’s height in inches) (a person’s weight in pounds, that same person’s height in inches) (a person’s height in centimeters, that same person’s height in inches) (a person’s telephone number, that same person’s height in inches)
Answer:
A function is a mathematical relation in which each input (domain value) is associated with exactly one output (range value). In other words, for a relation to be a function, each input can have only one corresponding output. Let's analyze the given pairings:
(a person’s age in years, that same person’s height in inches) - This can be a function because one person's age in years should correspond to a single height in inches.
(a person’s weight in pounds, that same person’s height in inches) - This can also be a function because one person's weight in pounds should correspond to a single height in inches.
(a person’s height in centimeters, that same person’s height in inches) - This can be a function because one person's height in centimeters should correspond to a single height in inches.
(a person’s telephone number, that same person’s height in inches) - This may not necessarily be a function. It's possible for two different people to have the same height in inches but different telephone numbers.
So, the pairings that always describe a function are:
(a person’s age in years, that same person’s height in inches)
(a person’s weight in pounds, that same person’s height in inches)
(a person’s height in centimeters, that same person’s height in inches)
These three pairings meet the criteria of a function, where each input corresponds to a unique output.
The pairing that always describes a function is option C. (a person’s height in centimeters, that same person’s height in inches)
How did we arrive at this assertion?A pairing describes a function when each unique input (domain element) is associated with exactly one unique output (range element). In other words, there should be no ambiguity or multiple outputs for a single input. Let's analyze the given pairings:
1. (a person’s age in years, that same person’s height in inches): This pairing may not always describe a function because multiple people can have the same age, but they might have different heights. So, there can be multiple outputs for the same input (age).
2. (a person’s weight in pounds, that same person’s height in inches): Similar to the first pairing, this may not always describe a function because different people can have the same weight but different heights.
3. (a person’s height in centimeters, that same person’s height in inches): This pairing describes a function because for each unique height in centimeters, there is only one corresponding height in inches.
4. (a person’s telephone number, that same person’s height in inches): This pairing may not always describe a function because multiple people can have the same telephone number, but they might have different heights. So, there can be multiple outputs for the same input (telephone number).
So, the pairing that always describes a function is: (a person’s height in centimeters, that same person’s height in inches)
learn more about function describing pairs: https://brainly.com/question/31919824
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a shed had a length of 13ft, and a height of 4 1/5 determine the volume? ( 50 points) ( and brainleyest)
Answer: undetermined
Step-by-step explanation: in order to find volume you need 3 dimensions the x y and z, you only have x and y no z so it’s a 2d object. If the width is also 13ft then 13x13x4.5= 760.5ft^3
Answer:
In order to find the volume you need 3 dimensions the x y and z, you only have x and y no z so it’s a 2d object. If the width is also 13ft then 13x13x4.5= 760.5ft^3
Step-by-step explanation:
!!!HELP ME I WILL GIVE 100 POINTS FOR 1 ANSWER AND A BRAINLIEST FOR ANSWERING!!!
Answer:
16
Step-by-step explanation:
It's basically the same thing as 8 x 2
For future problems like this, you just need to switch the equation symbol (Division --> Multiplication) and use the reciprocal of the fraction given to you if the equation wants you to divide.
work out the circumference of this circle. Take pi as 3.142. diameter is 14cm
Answer:
The circumference is solved with this equation: c=
Help please I don’t know this
×Answer: 400
Step-by-step explanation: \(20×20=400\)
Write -7 2/3 as an improper fraction.
A. -23/3
B. -21/3
C. -14/3
D. -19/3
Answer:
\(\textsf{A.} \quad -\dfrac{23}{3}\)
Step-by-step explanation:
Given mixed number:
\(-7 \frac{2}{3}\)
To convert a mixed number into an improper fraction, multiply the whole number by the denominator of the fraction and add it to the numerator of the fraction, then place the answer over the denominator:
\(\implies -\dfrac{7 \times 3+2}{3}=-\dfrac{21+2}{3}=-\dfrac{23}{3}\)
Part I: Making the Race
Henri is Emile's younger brother and they are having a walking race. Emile can walk 2.5 meters per second whereas Henri walks 1 meter per second. Because Emile is faster, they give Henri a 45 meter head start. Emile knows Henri would enjoy winning the race, but they do not want to make the race so short that it is obvious Emile let Henri win.
1. How long should the race be so that Henri will win in a close race?
2. Describe or show your strategy on how you came up with your answer for #1.
74 meters
Step-by-step explanation:
The difference in Emile and Henry's speed is 1.5, and the lead for Henry is 45 meters, so 45÷1.5= 30 seconds which means Henry will go another 30 meters at 1 meter per second.
2. To make it a close race we want Henry to go a longer distance than Emile, so make it 74 meters, which means Emile will go only have 45+29 = 74 seconds to get to 74 meters, but Henry only have 29 seconds in total = 29*2.5 = 72.5 meters.
math question please help me
Answer:
260
Step-by-step explanation:
thats just 30 +80+150
Ray and Max are playing a game with cards. At the end of the day Max has 5 cards. If the value of each card is -50 points, how many points does Max have? Explain. A) -250 B) - 10 C) 10 D) 250
Answer:
-250
Step-by-step explanation:
If the value of each card is -50 and Max has 5 cards. To find the points Max has you multiply -50(the value of one card) by 5(the number of cards Max has). The answer is -250 because when multiplying a negative and a positive the answer you get is a negative
HOPE IT HELPED
Answer: -250 points
When you multiply a positive and negative, you always get a negative.
-50 x 5 = -250
If there are 27 lollipops and 54 candy bars for a gift bag, fill out all of the possible ratios of lollipops to candy bars that could be made.
Answer:
1:2
Step-by-step explanation: 54 divided by 27 is 2 so 1 lollipop is 2 candy bars!
It takes 18 hours to fill a pool using 8 garden hoses. How long would it take to fill the same pool using 9 garden hoses?
We want to find how long will take for 9 garden hoses to fill the pool given that we know how long 8 of them need.
9 garden hoses will fill the pool in 16 hours.
Now, let's see how to solve the problem.
We know that for 8 gardener hoses, the pool is filled in 18 hours.
So, if every gardener hoses fill the pool at a rate R, we have the equation:
(8*R)*18 hours = 1 pool.
We can solve this for R:
R = (1 pool)/(8*18 hours).
Now, if we have 9 gardener hoses, we will have:
(9*R)*T = 1 pool.
Now we want to find the value of T.
We start by replacing the value of R that we found.
(9*(1 pool)/(8*18 hours))*T = 1 pool.
(1 pool/16 hours)*T = 1 pool.
T = (1 pool)/(1 pool/16 hours) = 16 hours.
Then we can conclude that 9 garden hoses will fill the pool in 16 hours.
If you want to learn more, you can read:
https://brainly.com/question/14305692
What is the area of this figure? Enter the answer in the box below.
Answer:
35
Step-by-step explanation:
4 x 2.5 for the triangles is 10
and half of 10 is 5
5 + 5 = 10
5 x 5 = 25
25 + 10 = 35
The answer is 35.
Answer:
A = 30cm²
Step-by-step explanation:
First, let's find the area of the triangle
Formula: 1/2 bh
The base is half of 5, which is 2.5
A = 1/2 (2.5)(4)
A = 5cm²
Next, let's find the area of the rectangle
Formula: bh
Base = 5cm
Height = 5cm
A = bh
A = (5)(5)
A = 25cm²
Now you add those two.
25 + 5 = 30cm²
A = 30cm²
This data set shows the daily number of visitors who used the yoga center at the park. The numbers in blue show the numbers for weekends. Daily Number of Visitors 13 15 12 18 9 18 20 15 22 26 24 12 29 12 18 8 16 17 21 19 38 24 37 27 32 34 28 31 15 Select the correct answer. For how many days were the numbers of visitors recorded? A. 27 B. 28 C. 29 D. 30 E. 31
What is the radius of a cylinder if it has a volume of 769.3 cubic meters and a height of 5 meters? (Use 3.14 for π.) 49 m 14 m 7 m 21 m
Answer:
7m
Step-by-step explanation:
v=πr^2h
769.3=3.14*r^2*5
769.3=15.7r^2
769.3/15.7=15.7r^2/15.7
49=r^2
√49=√r^2
√49=r
r=7m
a committee consisting of 4 faculty members and 5 students is to be formed. every committee position has the same duties and voting rights. there are 7 faculty members and 13 students eligible to serve on the committee. in how many ways can the committee be formed?
PLEASE ANSWER ASAP!!! Graph the following sets of points on a number line. y≥3 and y≤-2
Answer: Answers are down below
Step-by-step explanation:
please help me I don't know what proportion means!!!1
Answer:
noun. comparative relation between things or magnitudes as to size, quantity, number, etc.; ratio. proper relation between things or parts: to have tastes way out of proportion to one's financial means. relative size or extent. ... a portion or part in its relation to the whole: A large proportion of the debt remains.
Answer:
this means a part, share, or number considered in comparative relation to a whole.
Step-by-step explanation: